CN112397237B

CN112397237B - Ultraviolet-resistant mining photoelectric composite trailing cable

Info

Publication number: CN112397237B
Application number: CN202011086794.XA
Authority: CN
Inventors: 居盛文
Original assignee: Individual
Current assignee: SHANGHAI PUDONG WIRE AND CABLE (GROUP) CO Ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2022-03-08
Anticipated expiration: 2040-10-12
Also published as: CN112397237A

Abstract

The invention discloses an ultraviolet-resistant type optoelectronic composite trailing cable for mining, which comprises an elastic core, a tensile layer, a cable core, an inner sheath and an outer sheath sequentially arranged on the outer surface of the elastic core from the inside to the outside. The tensile layer is a cylindrical structure formed by splicing a first tensile sheet and a second tensile sheet with the same structure. Both sides of the first tensile sheet and the second tensile sheet are connected with braided connecting sheets along the length direction. Each first tensile sheet is a mesh structure spliced by a plurality of insulating tensile rods, the mesh of each first tensile sheet is a rectangular structure, and the four corners of each mesh are hinge points; The cable core is coiled on the outer surface of the elastic core in a spiral manner along the axial direction of the elastic core. When the cable provided by the present invention is pulled, the deformation of the tensile layer and the elastic core is used to provide the cable with an axial The upward stretched margin prevents the cable core from being torn off during pulling, and improves the pulling resistance of the entire cable.

Description

Ultraviolet-resistant mining photoelectric composite trailing cable

Technical Field

The invention relates to the technical field of cables, in particular to an ultraviolet-resistant mining photoelectric composite trailing cable.

Background

The composite cable simultaneously places the communication optical cable and the power cable in one cable, so that the cable transmits optical signals and simultaneously transmits power. When the cable is used for laying lines in cities, optical cables and electric cables do not need to be laid respectively, the occupied pipelines are few, and the construction cost is saved. The photoelectric composite cable utilizes a security monitoring system, ground or central monitoring personnel can directly monitor the underground condition in real time, the safety production condition of an underground working site can be visually monitored and recorded, and meanwhile, accident seedlings can be timely found through monitoring equipment installed underground to prevent the accidents in the bud. Therefore, the security monitoring system is an important component of the modern coal mine safety production monitoring system. And in order to ensure smooth communication when an accident happens and reduce loss, the underground transmission cable is required to have the requirements of power utilization and signal transmission of transmission equipment.

Then, because the existing photoelectric composite cable generally comprises at least one cable core and a protective sleeve coated on the surface of the cable core, the cable core has no elasticity, and when the photoelectric composite cable is dragged, the cable core is easily torn off, so that the service life of the photoelectric composite cable is shortened.

Disclosure of Invention

The invention aims to provide an ultraviolet-resistant mining photoelectric composite trailing cable to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the mining photoelectric composite trailing cable with ultraviolet resistance comprises an elastic core body, and a tensile layer, a cable core, an inner protection layer and an outer protection layer which are sequentially arranged on the outer surface of the elastic core body from inside to outside, wherein the tensile layer is of a cylindrical structure formed by splicing a first tensile resistance piece and a second tensile resistance piece which are identical in structure, weaving connecting pieces are connected to two sides of the first tensile resistance piece and the second tensile resistance piece along the length direction, every two adjacent weaving connecting pieces are sewn together through a connecting rope, each first tensile resistance piece or each second tensile resistance piece is of a net-shaped structure formed by splicing a plurality of insulating tensile rods, meshes of each first tensile resistance piece or each second tensile resistance piece are of a rectangular structure, and four corners of each mesh are hinged points;

the cable core is at least one and is sequentially wound on the outer surface of the elastic core body along the axial direction of the elastic core body in a spiral mode, the cable core is composed of a core conductor and a core conductor protection layer coated outside the core conductor, and elastic buffer strips are filled in gaps on the inner side of the core conductor protection layer.

Preferably, the meshes can also be in a diamond structure.

Preferably, the core conductor comprises at least 3 power core conductors, 1 photoelectric unit and 2 earth core conductors, and the core conductor protective layer of cladding outside the core conductor includes in proper order from inside to outside around the covering, weaves enhancement layer and insulating layer.

Preferably, the outer protective layer is made of neoprene CR material, and the outer surface of the outer protective layer is coated with a layer of ultraviolet-resistant coating.

Preferably, the elastic buffer strip is made of a silica gel material.

Compared with the prior art, the invention has the beneficial effects that:

(1) in the invention, the tensile layer is a cylindrical structure formed by splicing a first tensile sheet and a second tensile sheet which have the same structure, the two sides of the first tensile sheet and the second tensile sheet are connected with woven connecting sheets along the length direction, every two adjacent woven connecting sheets are sewn together through a connecting rope, each first tensile sheet or second tensile sheet is a net-shaped structure formed by splicing a plurality of insulating tensile rods, meshes of each first tensile sheet or second tensile sheet are rectangular structures, four corners of each mesh are hinge points, at least one cable core is coiled on the outer surface of the elastic core body along the axial direction of the elastic core body in a spiral mode, and the tensile layer is an annular net-shaped structure formed by hinging a plurality of insulating tensile rods, so that the meshes on the tensile layer deform along the axial direction of the cable in the process of pulling to enable the tensile layer to extend in the axial direction, simultaneously, the tensile layer can make self gather together along the cable is radial and to the elasticity core again because the elasticity core is elasticity in the extension in the axial, consequently, the in-process extrusion elasticity core that gathers together to the elasticity core when the tensile layer makes the elasticity core at the footpath shrink, and the elasticity core is when the footpath shrink, can make spiral winding become lax and then can make the cable core have the surplus by tensile in the axial on its cable core on its surface, thereby avoided pulling the in-process cable core of drawing to be pulled apart, and then improved the performance is pulled in the anti-tensile of whole cable.

(2) In the invention, the outer protective layer is made of a chloroprene rubber CR material, the outer surface of the outer protective layer is coated with the ultraviolet-resistant coating, the chloroprene rubber CR has good elasticity and wear resistance and also has good illumination resistance and distortion resistance, and the ultraviolet-resistant performance of the cable can be further improved by coating the ultraviolet-resistant coating on the surface of the chloroprene rubber CR.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a tensile layer;

FIG. 3 is a schematic structural diagram of the cable core;

fig. 4 is an enlarged view of a portion of a structure in fig. 2.

In the figure: 1. an elastic core; 2. a tensile layer; 201. a first anti-pull tab; 202. a second anti-pull tab; 203. weaving a connecting sheet; 3. a cable core; 301. a power core conductor; 302. a photoelectric unit; 303. a ground core conductor; 304. wrapping a covering; 305. weaving the reinforcing layer; 306. an insulating layer; 4. an inner protective layer; 5. an outer jacket; 6. an insulating tensile bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: an ultraviolet-resistant mining photoelectric composite trailing cable comprises an elastic core body 1, and a tensile layer 2, a cable core 3, an inner protection layer 4 and an outer protection layer 5 which are sequentially arranged on the outer surface of the elastic core body 1 from inside to outside, wherein the tensile layer 2 is a cylindrical structure formed by splicing a first tensile sheet 201 and a second tensile sheet 202 which are identical in structure, woven connecting sheets 203 are respectively connected to two sides of the first tensile sheet 201 and the second tensile sheet 202 along the length direction, every two adjacent woven connecting sheets 203 are sewn together through connecting ropes, each first tensile sheet 201 or second tensile sheet 202 is of a net structure formed by splicing a plurality of insulating tensile rods 6, meshes of each first tensile sheet 201 or second tensile sheet 202 are of a rectangular structure, and four corners of each mesh are hinged points;

the cable core 3 is at least one and is sequentially coiled on the outer surface of the elastic core body 1 along the axial direction of the elastic core body 1 in a spiral mode, the cable core 3 is composed of a core conductor and a core conductor protection layer coated outside the core conductor, and elastic buffer strips are filled in gaps on the inner side of the core conductor protection layer.

In this embodiment, the mesh may also be a diamond structure.

In this embodiment, the core conductor is composed of at least 3 power core conductors 301, 1

photoelectric unit

302 and 2 ground core conductors 303, and the core conductor protection layer covering the core conductor sequentially includes a wrapping layer 304, a braided reinforcing layer 305 and an insulating layer 306 from inside to outside.

In this embodiment, the outer jacket 5 is made of neoprene CR, and the outer surface of the outer jacket 5 is coated with a layer of ultraviolet-resistant coating, the neoprene CR has good elasticity and wear resistance, and simultaneously has better light resistance and distortion resistance, and the ultraviolet resistance of the cable can be further improved by coating the ultraviolet-resistant coating on the surface of the neoprene CR.

In this embodiment, the elastic buffer strip is made of silica gel, and when the cable core 3 receives external acting force, under the effect of the elastic buffer strip, the effect of buffering can be played, and the impact resistance of the cable core 3 is improved.

When the cable is pulled, because the tensile layer 2 is a ring-shaped reticular structure formed by hinging a plurality of insulating tensile rods 6, therefore, during the pulling process, the mesh on the tensile layer 2 deforms along the axial direction of the cable so that the tensile layer 2 elongates in the axial direction, meanwhile, the tensile layer 2 can gather along the radial direction of the cable and towards the elastic core 1 when extending in the axial direction, and because the elastic core 1 is elastic, when the tensile layer 2 is gathered towards the elastic core 1, the elastic core 1 is extruded to lead the elastic core 1 to contract in the radial direction, and the elastic core 1 is contracted in the radial direction, the cable core 3 spirally wound on the surface thereof becomes loose and the cable core 3 has a margin of being stretched in the axial direction, thereby avoiding the cable core 3 from being torn off in the pulling process and further improving the anti-pulling performance of the whole cable.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. An ultraviolet-resistant optoelectronic composite trailing cable for mining, comprising an elastic core (1), a tensile layer (2) and a cable core (3) sequentially arranged on the outer surface of the elastic core (1) from the inside to the outside ), the inner protective layer (4) and the outer protective layer (5), characterized in that: the tensile layer (2) is composed of a first tensile sheet (201) and a second tensile sheet (202) with the same structure A spliced tubular structure, and both sides of the first tensile sheet (201) and the second tensile sheet (202) are connected with braided connecting sheets (203) along the length direction, and each adjacent two said braids The connecting sheets (203) are sewn together by connecting ropes, and each of the first tensile sheet (201) or the second tensile sheet (202) is formed by splicing a plurality of insulating tensile bars (6). A mesh structure, and the mesh of each of the first tensile sheet (201) or the second tensile sheet (202) is a rectangular structure, and the four corners of each of the meshes are hinge points;

The cable core (3) is at least one and is wound on the outer surface of the elastic core body (1) in a spiral manner along the axial direction of the elastic core body (1) in turn, and the cable core (3) is composed of a wire core conductor It is composed of a wire core conductor protective layer wrapped around the wire core conductor, and an elastic buffer strip is filled in the gap inside the wire core conductor protective layer.

2 . The UV-resistant type mine-use optoelectronic composite trailing cable according to claim 1 , wherein the mesh can also be a diamond-shaped structure. 3 .

3. The ultraviolet-resistant type optoelectronic composite trailing cable for mine use according to claim 1, characterized in that: the core conductor is composed of at least three power core conductors (301), one optoelectronic unit (302) and two The ground wire core conductor (303) is composed, and the wire core conductor protective layer covering the wire core conductor includes a wrapping layer (304), a braided reinforcing layer (305) and an insulating layer (306) in sequence from the inside to the outside.

4. The ultraviolet-resistant mine-use optoelectronic composite trailing cable according to claim 1, characterized in that: the outer sheath (5) is made of neoprene CR material, and the outer sheath (5) is The surface is coated with an anti-UV coating.

5 . The UV-resistant mine-use optoelectronic composite trailing cable according to claim 1 , wherein the elastic buffer strip is made of silica gel. 6 .